Home > Pre-Algebra > Perimeter > Perimeter of a Trapezoid

Perimeter of a Trapezoid

Introduction

The perimeter of a trapezoid can be described as the distance around all four sides of the trapezoid. The green box around the rectangle below indicates the perimeter of the trapezoid.

Terms

Trapezoid - A quadrilateral with only one pair of parallel sides
Perimeter - The distance around all the edges of a geometric figure.

Lesson

The perimeter of a trapezoid can be calculated by adding the lengths of all the sides together. So if we are given a trapezoid with sides 12, 14, 10 and 8, the perimeter would be 12+14+10+8=4412 + 14 + 10 + 8 = 44.

Examples

Perimeter of a Trapezoid (Example #1)

1410.21010.210
Perimeter = Top + Side1 + Bottom + Side2
Perimeter=14+10.2+10+10.2\text{Perimeter} = 14 + 10.2 + 10 + 10.2
Perimeter=44.4\text{Perimeter} = 44.4

Perimeter of a Trapezoid (Example #2)

1512.171211.2811.1
Perimeter = Top + Side1 + Bottom + Side2
Perimeter=15+12.17+12+11.28\text{Perimeter} = 15 + 12.17 + 12 + 11.28
Perimeter=50.45\text{Perimeter} = 50.45

Perimeter of a Trapezoid (Example #3)

14.99.0812.79.069
Perimeter = Top + Side1 + Bottom + Side2
Perimeter=14.9+9.08+12.7+9.06\text{Perimeter} = 14.9 + 9.08 + 12.7 + 9.06
Perimeter=45.74\text{Perimeter} = 45.74

Perimeter of a Trapezoid (Example #4)

13.410.091410.259.8
Perimeter = Top + Side1 + Bottom + Side2
Perimeter=13.4+10.09+14+10.25\text{Perimeter} = 13.4 + 10.09 + 14 + 10.25
Perimeter=47.74\text{Perimeter} = 47.74

Perimeter of a Trapezoid Worksheets (PDF)

Perimeter of a Trapezoid Worksheet 1

Perimeter of a Trapezoid Worksheet 2

Perimeter of a Trapezoid Worksheet 3

0